adding thumbnail slider to theme template

Hi — I posted on this earlier today, but it looks like the thread may be closed, so I’m creating a new thread as the issue remains unresolved.

Basically, I’m trying to insert shortcode for a thumbnail slider into a child theme page template. I was told to drop the following code into the .php file associated with that page:

<?php echo do_shortcode(‘[your-shortcode id=123]’:wink: ?>

(With the specific shortcode in question placed between the brackets, of course.) But when I did that (in the WPEngine staging area), it crashed the site. What did I do wrong? Thanks